Whether or not the BG can be found in the background of the photo, there is the more important video. Libby did well. It is horrific, and dumbfounding, all the evidence she captured, and still no word of the capture of the BG monster.
The video has been held onto by the investigators, but we know there is one, based on the two images of the SUSPECT released to the public and the release of the "down the hill" audio. I still don't know if the audio was in conjunction with the video, or something she recorded from another app. It makes sense to me, it was from the same video sequence, so there was some pictorial evidence to support where they were being led down the hill, unless she put the phone in her pocket at that time. IMO. Like everyone here thinks, these were some brave girls.